Need help on ORA-12542: TNS:address already in use

Hi Toady morning , i faced this error. my database and listener is already up and running but application user posted this error to me. i do not see any error logs in oracle. could anybody pls help me as soon as possible. for workaround i have restarted the database. As it is in production needed urgent help. Below is the error;
Thu Aug 30 08:37:47 2012 733000 [DM_SESSION_E_CANT_MAKE_TEMP_CONNECTION]error: "Could not establish an internal, temporary database connection (database_name = , docbase_owner = I102, connection_string = ECM53); database system error was: ORA-12542: TNS:address already in use
Current Session ID: 0100213a8155ce3e
Last SQL statement executed by DB was:
No Session Record.TID(10176) failure during processing of request: NewSessionByAddr_string.
Thanks in advance

890482 wrote:
Hi Toady morning , i faced this error. my database and listener is already up and running but application user posted this error to me. i do not see any error logs in oracle. could anybody pls help me as soon as possible. for workaround i have restarted the database. As it is in production needed urgent help. Below is the error;
Thu Aug 30 08:37:47 2012 733000 [DM_SESSION_E_CANT_MAKE_TEMP_CONNECTION]error: "Could not establish an internal, temporary database connection (database_name = , docbase_owner = I102, connection_string = ECM53); database system error was: ORA-12542: TNS:address already in use
Current Session ID: 0100213a8155ce3e
Last SQL statement executed by DB was:
No Session Record.TID(10176) failure during processing of request: NewSessionByAddr_string.
Thanks in advancebcm@bcm-laptop:~$ oerr ora 12542
12542, 00000, "TNS:address already in use"
// *Cause: Specified listener address is already being used.
// *Action: Start your listener with a unique address.
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Similar Messages

Error: - ORA-12542: TNS:address already in use. How to resolve?

Hello all,
Can anyone guide me how to resolve this error. I have encountered this error for the first time!
Usually I run my batch job at every night. It generally takes 2 hours to 3 hours to complete. Till date I have not faced any problem of this kind.
I understand that there is conflict of Ports. The port that is being used by my listener, is also being shared by some other. I am not aware of that other program which may be using the port assigned to the listener.
Thanks in advance.
Himanshu

Hi,
I had the same problem today morning in my production. Listener was hanged and receved OEM alert as "Listerner Down" when i go and start the listerner its was failed then i found multiple PID created the same listerner then i went i killed both of the process and started the listener successfully.
Could you please tell me what was the exact cause.
Regards
Salai

TNS-12542: TNS:address already in use

Hi
I am getting the following error:
TNS-12542: TNS:address already in use
TNS-12560: TNS:protocol adapter error
TNS-00512: Address already in use
Linux Error: 98: Address already in use
Can someone please tell me how to fix it. This is 9i on Linux and it is just a single insatance?
Thanks in Advance.
Regards

Thanks for your time and reply Yas...
Actually, I am trying to stop it and it hangs. Nothing else except help works on the listener prompt but the listener process is running.
I killed the listener process using kill -9 and now I am not able to start it. I tried different ports also. Can someone please help me solving this? Start to stop commands just hangs.
Regards
Message was edited by:
Singh

Consistently Getting TNS-12542: TNS:address already in use error.

Hi
We are facing problem with listener service as It crashes with the error TNS-12542.
Once we restart the server it gets started again and work for some 3-4 days.
Than it crashes with the same error.Oracle version is 10g.
Any idea what could be problem?
Thanks in advance.

Its windows2003 server
Version
for 32-bit Windows: Version 10.2.0.1.0 - Production
TNS for 32-bit Windows: Version 10.2.0.1.0 - Production
Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production
Windows NT Named Pipes NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 10.2.0.1.0 - Production,,
Listener.ora
# listener.ora Network Configuration File: H:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.ora
# Generated by Oracle configuration tools.
LISTENER =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = IN1011)(PORT = 1521))
SID_LIST_LISTENER =
(SID_LIST =
(SID_DESC =
(GLOBAL_DBNAME =TESTDB1)
(ORACLE_HOME = \\IN1011\h$\oracle\product\10.2.0\db_1\NETWORK\ADMIN)
(SID_NAME = TESTDB1)
(SID_DESC =
(GLOBAL_DBNAME = TESTDB2)
(ORACLE_HOME = \\IN1011\h$\oracle\product\10.2.0\db_1\NETWORK\ADMIN)
(SID_NAME = TESTDB2)
(SID_DESC =
(PROGRAM = TESTDB3)
(SID_NAME = PLSExtProc)
(ORACLE_HOME = \\IN1011\h$\oracle\product\10.2.0\db_1)
(SID_DESC =
(PROGRAM = TESTDB4)
(SID_NAME = selmnewdsn_cc)
(ORACLE_HOME = \\IN1011\h$\oracle\product\10.2.0\db_1)
(SID_DESC =
(GLOBAL_DBNAME = TESTDB5)
(ORACLE_HOME = \\IN1011\h$\oracle\product\10.2.0\db_1\NETWORK\ADMIN)
(SID_NAME = TESTDB5)
Thanks

TNS-12542 : TNS: Adress already in use

We have 2 SAP System on one SUN Solaris Server. The Listener of the first system EC1 uses the port 1521 , the listener of the second system SO1 user the port 1522 - according to configurations files tnsnames.ora and listener.ora. The problem is that listener of SO1 can't be started and I receive the follow Error-Message Listener ( lsnrctl start) :
"System parameter file is /oracle/SO1/network/admin/listener.ora
Error listening on : <Adress=<Protokol+tcp><Port=1521>>
TNS-12542 : TNS: Adress already in use
TNS-12560 :TNS: protocol adapter error
TNS-00512: Adress already in use
Solaris Error : 125: Adress already in use
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On this server runs only one Listener on port 1521 for EC1.
Thank You!
Erika
SAP Basis Consultant

Hi,
this is my listener.ora for SO1:
Filename......: listener.ora
Created.......: created by SAP AG, R/3 Rel. >= 6.10
Name..........:
Date..........:
@(#) $Id: //bc/640-2/src/ins/SAPINST/impl/tpls/ora/ind/LISTENER.ORA#4 $
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(ADDRESS_LIST =
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STARTUP_WAIT_TIME_LISTENER = 0
CONNECT_TIMEOUT_LISTENER = 10
TRACE_LEVEL_LISTENER = OFF
SID_LIST_LISTENER =
(SID_LIST =
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      (ORACLE_HOME = /oracle/SO1/920_64)
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ADMIN_RESTRICTIONS_LISTENER1 = on
STARTUP_WAIT_TIME_LISTENER1 = 0
CONNECT_TIMEOUT_LISTENER1 = 10
TRACE_LEVEL_LISTENER1 = OFF
And this is my tnsnames.ora for SO1:
Filename......: tnsnames.ora
Created.......: created by SAP AG, R/3 Rel. >= 6.10
Name..........:
Date..........:
@(#) $Id: //bc/640-2/src/ins/SAPINST/impl/tpls/ora/ind/TNSNAMES.ORA#4 $
SO1.WORLD =
(DESCRIPTION =
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    (ADDRESS_LIST =
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        (PROTOCOL = TCP)
        (HOST = sbsfierp)
        (PORT = 1528)
    (CONNECT_DATA =
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      (GLOBAL_NAME = SO1.WORLD)
Thank You!
Erika

TNS Address already in use error

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PLEASE HELP. shell/tcp: bind: Address already in use

Hi,
I am getting theses messages every 10 minutes and I don't know why.
Feb 17 03:17:21 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:17:21 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:27:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:27:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:37:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:37:23 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:47:24 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:47:24 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:57:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:57:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:07:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:07:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:17:27 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:17:27 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:27:29 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:27:29 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:37:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:37:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:47:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
The only strange thing that I see is that in /etc/inetd.conf
there are theses lines:
shell stream tcp nowait root /usr/sbin/in.rshd in.rshd
shell stream tcp6 nowait root /usr/sbin/in.rshd in.rshd
exec stream tcp nowait root /usr/sbin/in.rexecd in.rexecd
exec stream tcp6 nowait root /usr/sbin/in.rexecd in.rexecd
But I haven't enabled IPv6 on my system.
I also have this message at random time:
Feb 18 18:43:46 MONTSENY inetd[157]: [ID 268928 daemon.error] rusersd/rpc/datagram_v,circuit_v: could not get transport information
Feb 18 18:43:46 MONTSENY inetd[157]: [ID 307641 daemon.error] rusersd/rpc/datagram_v,circuit_v: tli_socket: No such file or director
There is only one instance of inetd running.
I haven't installed any additional services. At the beginning things went ok I think that the problem started when I added an IP address to the second eth interface.
The system is a Sun Netra T1.
The system version is: Solaris 8.
Please reply also to: [email protected]
Thanks in advance.

Hi,
I am getting theses messages every 10 minutes and I don't know why.
Feb 17 03:17:21 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:17:21 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:27:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:27:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:37:22 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:37:23 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:47:24 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:47:24 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 03:57:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 03:57:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:07:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:07:26 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:17:27 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:17:27 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:27:29 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:27:29 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:37:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
Feb 17 04:37:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] shell/tcp: bind: Address already in use
Feb 17 04:47:30 MONTSENY inetd[29012]: [ID 161378 daemon.error] exec/tcp: bind: Address already in use
The only strange thing that I see is that in /etc/inetd.conf
there are theses lines:
shell stream tcp nowait root /usr/sbin/in.rshd in.rshd
shell stream tcp6 nowait root /usr/sbin/in.rshd in.rshd
exec stream tcp nowait root /usr/sbin/in.rexecd in.rexecd
exec stream tcp6 nowait root /usr/sbin/in.rexecd in.rexecd
But I haven't enabled IPv6 on my system.
I also have this message at random time:
Feb 18 18:43:46 MONTSENY inetd[157]: [ID 268928 daemon.error] rusersd/rpc/datagram_v,circuit_v: could not get transport information
Feb 18 18:43:46 MONTSENY inetd[157]: [ID 307641 daemon.error] rusersd/rpc/datagram_v,circuit_v: tli_socket: No such file or director
There is only one instance of inetd running.
I haven't installed any additional services. At the beginning things went ok I think that the problem started when I added an IP address to the second eth interface.
The system is a Sun Netra T1.
The system version is: Solaris 8.
Please reply also to: [email protected]
Thanks in advance.

Web Service Client, BindException, Address already in use, saaj.SOAPExcepti

Hello,
Am caught up with an error and i can't get past it, need some help here.
My application is a batch processing web service client, reads some input rows, sends web service requets, processes the responses and logs it.
The application runs well in normal mode, but under load(more thread count), I get this wierd error and I can't make it go away.
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Caused by: java.net.BindException: Address already in use: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
I have properly closed the connections after each web service calls, but it still says Address in use. Please refer below for the complete stack trace and a piece of the code. Am using SAAJ and JWSDP and am not using AXIS api. I have searched the web but couldn't find any solutions.
This is not an error that server is not closing connections properly as I was able to test with SOAPUI and LoadRunner with even higher threads and it ran without problems. SOAPUI and LoadRunner scripts were executed from the same client machine as my application uses. Please help.
For each inputrow
SOAPConnection connection = null;
try
SOAPConnectionFactory soapConnFactory = SOAPConnectionFactory.newInstance();
connection = soapConnFactory.createConnection();
SOAPMessage request = getRequest(inputRow);
SOAPMessage response = connection.call(request, "http://<<server>>:<<port no>>/Domain/Services/Mgmt");
finally
if (connection != null)
connection.close();
}catch(SOAPException se){
System.out.println("Error while closing connection. " + se.getMessage());
connection = null;
} // End of for loop
Stack Trace:
java.security.PrivilegedActionException: com.sun.xml.messaging.saaj.SOAPExceptio
nImpl: Message send failed
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.call(HttpSOA
PConnection.java:121)
at ClientImpl.getResponse(ClientImpl.java:440)
at input.InputSampler$MyCallable.call(Sampler.java:63)
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: com.sun.xml.messaging.saaj.SOAPExceptionImpl: Message send failed
at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.post(HttpSOA
PConnection.java:325)
at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection$PriviledgedP
ost.run(HttpSOAPConnection.java:150)
... 12 more
Caused by: java.net.BindException: Address already in use: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown S
ource)
at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.post(HttpSOA
PConnection.java:282)
Is there something like connection pooling for web services, is that the answer to this issue, if yes, please let me know where i should start.
Thanks
Dev

Move server socket creation out of while loop. You don't need to create new server socket every time.

Address already in use for oc4j-instance: unable to run a form

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LOG Q0I= NiIBindSocket: bind (98: Address already in use) [nixxi.cpp 3740] [Thr 140207008876384] *** ERROR = NiIBindSocket: SiBind failed for hdl 17/sock 7

Dear All ,
I am installing SAP Netveiwer 7.2 with oracle 11 g database in suse linux 11 but i am getting one error in Start instance phase , my message server is not getting connected , when i am trying to start manually then my instance is connected but in this phase sap check message server is up or not , here i am attaching log of message server where i am getting error , if any buddy knw Plz help me ....
log file -
trc file: "dev_ms.new", trc level: 1, release: "720"
[Thr 140207008876384] Tue Jun 10 01:34:56 2014
[Thr 140207008876384] ms/http_max_clients = 500 -> 500
[Thr 140207008876384] MsSSetTrcLog: trc logging active, max size = 52428800 bytes
systemid   390 (AMD/Intel x86_64 with Linux)
relno      7200
patchlevel 0
patchno    413
intno      20020600
make       multithreaded, Unicode, 64 bit, optimized
pid        7294
[Thr 140207008876384] ***LOG Q01=> MsSInit, MSStart (Msg Server 1 7294) [msxxserv_mt. 2280]
[Thr 140207008876384] SigISetDefaultAction : default handling for signal SIGCHLD
[Thr 140207008876384] ***LOG Q0I=> NiIBindSocket: bind (98: Address already in use) [nixxi.cpp 3740]
[Thr 140207008876384] *** ERROR => NiIBindSocket: SiBind failed for hdl 17/sock 7
    (SI_EPORT_INUSE/98; I4; ST; 0.0.0.0:3601) [nixxi.cpp    3740]
[Thr 140207008876384] *** ERROR => MsSCommInit: NiBufListen(sapmsINI) (rc=NIESERV_USED) [msxxserv_mt. 12225]
[Thr 140207008876384] *** ERROR => MsSInit: MsSCommInit [msxxserv_mt. 2324]
[Thr 140207008876384] *** ERROR => MsSInit failed, see dev_ms.new for details
[msxxserv_mt. 7572]
[Thr 140207008876384] ***LOG Q02=> MsSHalt, MSStop (Msg Server 7294) [msxxserv_mt. 7631]

Hello Shyam,
I don't see how updating the kernel would help in this case.
If the port was already in use, any kernel version would give the same error.
Hello Arpit,
Since this is a Linux server, you can also run "lsof -nP|grep 3601" (may need to be logged on as "root"). This should give you more details than "netstat" (e.g., it will give you the PID of the process that's already using the port).
The solution has already being pointed on this thread. You need to find out which process is using the port, and stop this other process.
Cheers,
Isaías

Bind address already in use

Hello all,
I have a strange problem with TCP sokets.
on a SunOS5.9 Sparc machine i am running a server progam
which has the sequence,
socket()
bind()
listen()
connect().....
do lots of processing with the clients (around 28 clients)
close()
sleep(30)
server restart the above sequence
when restarting i get a bind error:
Address already in Use.
i have verifeid that the socket is close, return value of close is 0.
Is it possible that socket resources are not released by kernel?
Is tuning the value of tcp_time_wait_interval to a low value will help to get the code running.
Or is there any other tunbale parameter to be tuned out.
Please help me to resolve this.
Thanks.

Hello all,
I have a strange problem with TCP sokets.
on a SunOS5.9 Sparc machine i am running a server progam
which has the sequence,
socket()
bind()
listen()
connect().....
do lots of processing with the clients (around 28 clients)
close()
sleep(30)
server restart the above sequence
when restarting i get a bind error:
Address already in Use.
i have verifeid that the socket is close, return value of close is 0.
Is it possible that socket resources are not released by kernel?
Is tuning the value of tcp_time_wait_interval to a low value will help to get the code running.
Or is there any other tunbale parameter to be tuned out.
Please help me to resolve this.
Thanks.

Unable to bind socket: Address already in use

Hi,
I get the following error whenever I start my Application Server on Linux machine.
If I deploy the EJB application onto a OC4J instance, the server is refusing the connection by throwing Connection Refused error.
Any insight about this issue will be helpful.
Thanks,
Mohan
04/07/08 17:14:42 Error starting ORMI-Server. Unable to bind socket: Address already in use
04/07/08 17:14:44 Oracle Application Server Containers for J2EE 10g (9.0.4.0.0) initialized
04/07/08 17:14:44 java.lang.NullPointerException
04/07/08 17:14:44 at com.evermind.server.rmi.RMIServer.run(RMIServer.java:470)
04/07/08 17:14:44 at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(Releasabl
eResourcePooledExecutor.java:186)
04/07/08 17:14:44 at java.lang.Thread.run(Thread.java:534)

have you checked to see what is running before you start your oracle app server on your ports? you can use netstat for one

Failed to join cluster - Address already in use

Hi there,
          I'm trying to set up a cluster with WLS 7.0 on Linux (kernel 2.4.20). Apparently, the OS is configured correctly: the kernel is compiled with multicast support and multicast routes have been appropriately defined.
          The admin server starts correctly, and managed servers running on other OSs successfully join the cluster. However, when a I try to run a managed server on this linux, I get the following error:
          <Apr 29, 2003 12:27:52 AM CEST> <Error> <Cluster> <000116> <Failed to join cluster testcluster at address 237.0.0.1 due to : java.net.BindException: Address already in use
          java.net.BindException: Address already in use
          at java.net.PlainDatagramSocketImpl.bind(Native Method)
          at java.net.MulticastSocket.create(MulticastSocket.java:123)
          at java.net.DatagramSocket.<init>(DatagramSocket.java:135)
          at java.net.DatagramSocket.<init>(DatagramSocket.java:107)
          at java.net.MulticastSocket.<init>(MulticastSocket.java:99)
          at weblogic.cluster.FragmentSocket.initializeMulticastSocket(FragmentSocket.java:87)
          at weblogic.cluster.FragmentSocket.start(FragmentSocket.java:110)
          at weblogic.cluster.MulticastManager.startListening(MulticastManager.java:140)
          at weblogic.cluster.ClusterCommunicationService.initialize(ClusterCommunicationService.java:51)
          at weblogic.t3.srvr.T3Srvr.initialize1(T3Srvr.java:773)
          at weblogic.t3.srvr.T3Srvr.initialize(T3Srvr.java:589)
          at weblogic.t3.srvr.T3Srvr.run(T3Srvr.java:277)
          at weblogic.Server.main(Server.java:32)
          >
          I have tried to change the multicast address but the error persists.
          Am I missing something? Any help would be muchly appreciated.


have you checked to see what is running before you start your oracle app server on your ports? you can use netstat for one

Need help on ORA-12542: TNS:address already in use

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